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yikes! Subpanel cutouts

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hotwheels

Joined: 01 Jun 2007
Posts: 240

Posted: Wed Aug 13, 2008 5:23 pm Post subject: yikes! Subpanel cutouts

I'm looking at my subpanel next to the Vans plans chapter 41 (hey I'm back in the book again!).



So far, I've trimmed the aft part of the two outboard ribs to allow for adequate EFIS clearance. However, the radio stack seems likely to require reinforced holes (just to the right of the center rib). Are the large cutouts in the plans meant to be a general sort of guideline?



How are radios in the radio stack secured to the subpanel structure?



Are the circular subpanel holes for round steam gauge stuff or for wire routing?



This probably makes perfect sense once you've done it, but there are too many questions to just start whacking away. I'd love to hear what others have done and see some photos if possible.



Thanks in advance for any replies!



Cheers,

Jay

Engine, wiring, and panel stuff... oh my!

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jesse(at)saintaviation.co
Guest

Posted: Wed Aug 13, 2008 5:54 pm Post subject: yikes! Subpanel cutouts

Van's sample is just for reference of different ways of reinforcing  

different sizes and shapes of holes.  For a radio stack hole, if you  

use aluminum angle around the perimeter, with the horizontal angles on  

one side and the vertical angles on the other with a rivet holding the  

angles to each other in the corners, that seems to be the strongest  

format.  Then you can make a bracket that ties the radios together or  

at least ties the heaviest and/or lowest to one of those angles or  

another sub-panel structure.  Most radio trays have holes towards the  

back that you can put a #6 screw through into a brace, which can be  

made out of aluminum angle as well, which can then be bolted/screwed  

to one of the angles on the perimeter of the hole.



Most round instruments aren't deep enough to need a hole in the sub- 

panel in my experience, but you may have things such as instrument  

cooling fans that will have hoses running to the back of the radio  

stack, and you will certainly have a lot of cables running between the  

radio stack and the other instruments, not to mention all of the wires  

for engine monitoring, electrical buss(es), pitot and static lines,  

remote magnetometers and ahrs units, etc.  Find out how many things  

you have to run, then make at least double the number of holes you  

need to run them.  I like to use 3/4" holes with snap bushings as much  

as possible, often with nutplates to screw cushion clamps onto for  

supporting wiring runs where needed around the subpanel, usually along  

the bottom.



Jesse Saint

Saint Aviation, Inc.

jesse(at)saintaviation.com

Cell: 352-427-0285

Fax: 815-377-3694



On Aug 13, 2008, at 9:22 PM, Jay Brinkmeyer wrote:



 	  Quote: 	
		   

 >



 I'm looking at my subpanel next to the Vans plans chapter 41 (hey  

 I'm back in the book again!).



 So far, I've trimmed the aft part of the two outboard ribs to allow  

 for adequate EFIS clearance. However, the radio stack seems likely  

 to require reinforced holes (just to the right of the center rib).  

 Are the large cutouts in the plans meant to be a general sort of  

 guideline?



 How are radios in the radio stack secured to the subpanel structure?



 Are the circular subpanel holes for round steam gauge stuff or for  

 wire routing?



 This probably makes perfect sense once you've done it, but there are  

 too many questions to just start whacking away. I'd love to hear  

 what others have done and see some photos if possible.



 Thanks in advance for any replies!



 Cheers,

 Jay

 Engine, wiring, and panel stuff... oh my!

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

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